Significance? You can once again buy80ounces of peanut butter at a time.

The revival, rolling out earlier in some stores than others, has prompted cheers. “When I saw it was back, I bought 10 jars, in case it went away again,” one shopper wrote on Costco’s Facebook page.

The problem was a peanut shortage in 2011, according to this month’s Costco Connection. With peanut prices low and cotton prices high, many peanut farmers switched crops. A drought furthered reduced supply.

Costco uses Valencia peanuts, which supposedly taste better, but are hard to harvest. Instead of changing peanuts or raising prices, Costco said goodbye to its last jars in May of 2012. “It didn’t make sense to lower the quality,” said Craig Wilson, Costco’s vice-president of quality assurance and food safety.

No link to salmonella cases

Costco’s peanut butter sold out before it was part of a huge recall in a peanut-related salmonella outbreak last year. The recalled products stemmed from the tainted Sunland, Inc. peanut plant, with illnesses ultimately traced to one product, Trader Joe’s Valencia Peanut Butter.

No cases were linked to Costco’s brand, said the CDC. No salmonella was found in Costco’s peanut butter, said Wilson. He said Costco is working with New Mexico-based Sunland again, which was suspended and federally reinstated this year.

So, is the return of peanut butter in 40-ounce-jar double-packs** something to celebrate? If so, check out the clip below. It’s right after this slideshow about all the things we love and hate about Costco:

Photo: FREDERIC J. BROWN / AFP/Getty Images

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If there's a store that can make toilet paper sexy, it's Costco. The Issaquah, Wash.-based warehouse chain has fans worldwide devoted to its behemoth bundles and other bulk goods.
But now comes a study that adds fuel to favorite things about Costco. A recent survey of 7,600 people found <a href='http://www.marketforce.com/press-releases/item/market-force-study-shows-costco-is-most-popular-gas-station-/'>Costco to be the most popular gas station</a> in North America, according to customer research group Market Force.
In light of that, here are all the things we love and hate about shopping at our favorite cavernous warehouse. less

If there's a store that can make toilet paper sexy, it's Costco. The Issaquah, Wash.-based warehouse chain has fans worldwide devoted to its behemoth bundles and other bulk goods.
But now comes a study ... more

Photo: FREDERIC J. BROWN / AFP/Getty Images

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<b>Love:</b> The toilet paper. Is there a better deal than Kirkland Signature's 30 rolls for $15? You know you'll use it.

<b>Love:</b> The toilet paper. Is there a better deal than Kirkland Signature's 30 rolls for $15? You know you'll use it.

Photo: seattlepi.com

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<b>Hate:</b> The fact that the toilet paper is way in the back, meaning you might buy a fluffy pillow you really don't need, because it was touchable and there, as you made your way to the toilet paper. less

<b>Hate:</b> The fact that the toilet paper is way in the back, meaning you might buy a fluffy pillow you really don't need, because it was touchable and there, as you made your way to the toilet ... more

Photo: seattlepi.com

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<b>Love:</b> Samples. A great way to dine on Vienna sausages.

<b>Love:</b> Samples. A great way to dine on Vienna sausages.

Photo: Tim Boyle / Getty Images

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<b>Hate:</b> Getting to the sample. Worse: Waiting for a sample to emerge from the toaster oven and watching people swoop in from behind you.

<b>Hate:</b> Getting to the sample. Worse: Waiting for a sample to emerge from the toaster oven and watching people swoop in from behind you.

<b>Hate:</b> Wandering in search of the mayonnaise, because Costco purposely doesn't label its aisles. Think of it as a treasure hunt. (Photo: <a href='http://www.flickr.com/photos/dgmckelvey/3719496913/'>dgmckelvey</a>, Creative Commons Flickr). less

<b>Hate:</b> Wandering in search of the mayonnaise, because Costco purposely doesn't label its aisles. Think of it as a treasure hunt. (Photo: <a ... more

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<b>Hate:</b> Navigating your full, oversized cart around other people with full, oversized carts.

<b>Hate:</b> Navigating your full, oversized cart around other people with full, oversized carts.

Photo: Joe Raedle / Getty Images

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<b>Hate even more:</b> Navigating your cart on a <i>weekend at Costco</i>. The worst.
(Photo: <a href='http://www.flickr.com/photos/miamism/6062319821/'>miamism</a>, Creative Commons Flickr). less

<b>Hate even more:</b> Navigating your cart on a <i>weekend at Costco</i>. The worst.
(Photo: <a href='http://www.flickr.com/photos/miamism/6062319821/'>miamism</a>, Creative Commons ... more

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<b>Love:</b> The rotisserie chicken. A great buy at $5 for a three-pound bird.

<b>Love:</b> The rotisserie chicken. A great buy at $5 for a three-pound bird.

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<b>Hate:</b> The random food you end up buying when you went for the chicken and spotted some colored ravioli ''stars.''

<b>Hate:</b> The random food you end up buying when you went for the chicken and spotted some colored ravioli ''stars.''

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<b>Love:</b> Cheap jeans, and designer jeans under $100.

<b>Love:</b> Cheap jeans, and designer jeans under $100.

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<b>Hate:</b> Nowhere to try on those cheap jeans.

<b>Hate:</b> Nowhere to try on those cheap jeans.

Photo: seattlepi.com

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<b>Hate:</b> Parking on the weekend at Costco.

<b>Hate:</b> Parking on the weekend at Costco.

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<b>Love:</b> Costco gas. In the survey by Market Force, Costco beat out Shell, Sam's Club, Kroger and Arco for most customer visits per station.

<b>Love:</b> Costco gas. In the survey by Market Force, Costco beat out Shell, Sam's Club, Kroger and Arco for most customer visits per station.